Table 3

 pH in the mid and distal colon and in the stool before and during treatment with wheat bran, senna and loperamide

Before During Difference 95% CI p Value
Mid colon
 Wheat bran6.83(0.39)6.59(0.48)−0.24−0.57 to  0.090.140
 Senna6.85(0.48)6.39(0.48)−0.46−0.87 to −0.04 0.035
 Loperamide6.89(0.46)6.96(0.39)0.07−0.31 to  0.440.700
Distal colon
 Wheat bran7.08(0.47)6.88(0.43)−0.20−0.38 to −0.02 0.033
 Senna7.14(0.52)6.66(0.48)−0.48−0.93 to −0.03 0.039
 Loperamide7.11(0.25)7.15(0.37)0.04−0.29 to  0.370.800
Stool
 Wheat bran6.82(0.73)6.80(0.52)−0.03−0.52 to  0.470.910
 Senna6.99(0.67)6.70(0.35)−0.29−0.76 to  0.180.210
 Loperamide6.89(0.42)7.22(0.53)0.32−0.20 to  0.840.200
  • Results expressed as mean (SD).